Operating Instructions
REOTRON MEW
REO
UK LTD
8
ELEKTRONIK
ELEKTRONIK
ELEKTRONIK
ELEKTRONIK
Adjustment of the MIN - Values:
Umin
Trimmers P1 and P2 are used to adjust the MIN value, however these trimmers are used for various
other functions. Below is the recommended adjustment procedure.
Set rotary switch 'S2' on the front panel to position '1' and press the RESET button. Next
adjust the trimmers P1 (coarse) and P2 (fine) to the required minimum voltage and
afterwards press the SETUP button. To return to normal operation put the rotary switch
'S2' back to '0' and press the RESET button.
Imin
This adjustment is only meaningful for pure current control, if a current free condition of the load is to
be avoided.
This adjustment is also carried out by using trimmers P1 and P2. Set rotary switch 'S2' on the front
panel to position '2' and press the RESET button. Next adjust the trimmers P1 (coarse)
and P2 (fine) to the required minimum current and afterwards press the SETUP button.
To return to normal operation put the rotary switch 'S2' back to '0' and press the RESET
button.
Ramp up /down times
The ramp up time for when the unit is switched on, using the enable input (set point 100%) or when
the set point suddenly rises, giving 0 to 100% of the maximum output value, and also the run down
time to reach an output value for a set point change in the direction of zero.
This adjustment is similarly achieved using the trimmer P1 for Ramp up and P2 for Ramp down times.
With the voltage set point at zero and the current set point at maximum.
Set rotary switch 'S2' on the front panel to position '3' and press the RESET button. Next set the
required ramp time (0.1-10s) using trimmer P1 and test for a set point change from
zero to 100%; afterwards set the ramp down time with trimmer P2 and again test by
changing the set point. When the required values have been chosen, once again press
the "SETUP" button, return rotary switch 'S2' back to '0' and press the RESET button.
Proportional Characteristic Voltage Regulation
The speed of regulation (sensitivity) of the voltage regulator. Adjust, using the actual load, using
trimmer P3.
Proportional Characteristic Current Regulation
The speed of regulation (sensitivity) of the current regulator. Adjust, using the actual load, using
trimmer P4.
Hint
To return the unit to the factory settings, the procedure is as follows:-
Rotate selector switch "S2" to position "F" and press the RESET button. Afterwards press the SETUP
button and return selector switch "S2" to position "0" and press the RESET button once more. The
factory settings are now reinstated.
Selector Switch S1 (Operating Mode)
S1/1 OFF = Phase angle control
ON = Full wave control
S1/2 not active
S1/3 not active
S1/4 not active
S1/5 OFF = 0...20 mA
ON = 4...20 mA (Setpoint)
S1/6 OFF = U/I - Regulation
ON = Power Regulation
S1/7 OFF = Without data interface
ON = with data interface
S1/8 OFF = Reserved
The RESET button must be pressed before a change of the switch settings.
ON
OFF
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